Miley Cyrus has reportedly been videotaped 'dirty dancing' at an LA party.

The video shows the Hannah Montana actress grind dancing, drink in hand, with The Last Song producer Adam Shankman at the film's wrap party. In a second clip, Cyrus gives Shankman a lapdance in front of young children, reports Radar Online.

"The worst part is that there were little kids at the party and the dancing between Miley and Adam was so dirty that some of the parents actually left the party and took their kids home," a source said.

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Photos of the lapdance surfaced online last year, leading the producer to publicly defend the teen star via Twitter.

Shankman said: "Miley is a sweet angel who works tirelessly and endlessly, and is allowed to have fun in the make-up room!â€